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<font color='#009900'>// Copyright (C) 2006  Davis E. King (davis@dlib.net)
</font><font color='#009900'>// License: Boost Software License   See LICENSE.txt for the full license.
</font><font color='#0000FF'>#ifndef</font> DLIB_BASE64_KERNEl_1_
<font color='#0000FF'>#define</font> DLIB_BASE64_KERNEl_1_

<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='../algs.h.html'>../algs.h</a>"
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='base64_kernel_abstract.h.html'>base64_kernel_abstract.h</a>"
<font color='#0000FF'>#include</font> <font color='#5555FF'>&lt;</font>iosfwd<font color='#5555FF'>&gt;</font>

<font color='#0000FF'>namespace</font> dlib
<b>{</b>

    <font color='#0000FF'>class</font> <b><a name='base64'></a>base64</b> 
    <b>{</b>
        <font color='#009900'>/*!
            INITIAL VALUE
                - bad_value == 100
                - encode_table == a pointer to an array of 64 chars
                - where x is a 6 bit value the following is true:
                    - encode_table[x] == the base64 encoding of x
                - decode_table == a pointer to an array of UCHAR_MAX chars
                - where x is any char value:
                    - if (x is a valid character in the base64 coding scheme) then
                        - decode_table[x] == the 6 bit value that x encodes
                    - else
                        - decode_table[x] == bad_value 

            CONVENTION
                - The state of this object never changes so just refer to its
                  initial value.
                  

        !*/</font>

    <font color='#0000FF'>public</font>:
        <font color='#009900'>// this is here for backwards compatibility with older versions of dlib.
</font>        <font color='#0000FF'>typedef</font> base64 kernel_1a;

        <font color='#0000FF'>class</font> <b><a name='decode_error'></a>decode_error</b> : <font color='#0000FF'>public</font> dlib::error <b>{</b> <font color='#0000FF'>public</font>:
        <b><a name='decode_error'></a>decode_error</b><font face='Lucida Console'>(</font> <font color='#0000FF'>const</font> std::string<font color='#5555FF'>&amp;</font> e<font face='Lucida Console'>)</font> : error<font face='Lucida Console'>(</font>e<font face='Lucida Console'>)</font> <b>{</b><b>}</b><b>}</b>;

        <b><a name='base64'></a>base64</b> <font face='Lucida Console'>(</font>
        <font face='Lucida Console'>)</font>;

        <font color='#0000FF'>virtual</font> ~<b><a name='base64'></a>base64</b> <font face='Lucida Console'>(</font>
        <font face='Lucida Console'>)</font>;

        <font color='#0000FF'>enum</font> <b><a name='line_ending_type'></a>line_ending_type</b>
        <b>{</b>
            CR,  <font color='#009900'>// i.e. "\r"
</font>            LF,  <font color='#009900'>// i.e. "\n"
</font>            CRLF <font color='#009900'>// i.e. "\r\n"
</font>        <b>}</b>;

        line_ending_type <b><a name='line_ending'></a>line_ending</b> <font face='Lucida Console'>(</font>
        <font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;

        <font color='#0000FF'><u>void</u></font> <b><a name='set_line_ending'></a>set_line_ending</b> <font face='Lucida Console'>(</font>
            line_ending_type eol_style_
        <font face='Lucida Console'>)</font>;

        <font color='#0000FF'><u>void</u></font> <b><a name='encode'></a>encode</b> <font face='Lucida Console'>(</font>
            std::istream<font color='#5555FF'>&amp;</font> in,
            std::ostream<font color='#5555FF'>&amp;</font> out
        <font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;

        <font color='#0000FF'><u>void</u></font> <b><a name='decode'></a>decode</b> <font face='Lucida Console'>(</font>
            std::istream<font color='#5555FF'>&amp;</font> in,
            std::ostream<font color='#5555FF'>&amp;</font> out
        <font face='Lucida Console'>)</font> <font color='#0000FF'>const</font>;

    <font color='#0000FF'>private</font>:

        <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> encode_table;
        <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font><font color='#5555FF'>*</font> decode_table;
        <font color='#0000FF'>const</font> <font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font> bad_value;
        line_ending_type eol_style;

        <font color='#009900'>// restricted functions
</font>        <b><a name='base64'></a>base64</b><font face='Lucida Console'>(</font>base64<font color='#5555FF'>&amp;</font><font face='Lucida Console'>)</font>;        <font color='#009900'>// copy constructor
</font>        base64<font color='#5555FF'>&amp;</font> <b><a name='operator'></a>operator</b><font color='#5555FF'>=</font><font face='Lucida Console'>(</font>base64<font color='#5555FF'>&amp;</font><font face='Lucida Console'>)</font>;    <font color='#009900'>// assignment operator
</font>
    <b>}</b>;   
   
<b>}</b>

<font color='#0000FF'>#ifdef</font> NO_MAKEFILE
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='base64_kernel_1.cpp.html'>base64_kernel_1.cpp</a>"
<font color='#0000FF'>#endif</font>

<font color='#0000FF'>#endif</font> <font color='#009900'>// DLIB_BASE64_KERNEl_1_
</font>

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